There are a number of reasons why I feel that modern philosophy, even analytic philosophy, has gone astray - so far astray that I simply can't make use of their years and years of dedicated work.

Yes, much modern philosophy has gone astray. But some hasn't. I would cite, for example, the thinking of critical rationalists such as Karl Popper, William Warren Bartley, David Deutsch, and David Miller.

Moreover I maintain that critical rationalism ought to be of use to you. First, it contains cogent criticism of inductivism and crypto-inductivism and one who understands these criticisms should see why Bayescraft is sterile. This knowledge is not only useful, it can't be ignored. Second, critical rationalism, and not Bayescraft, is our best current theory of knowledge and how we come to know things. Best theories are useful not only in themselves but also for the problems they contain.